How to make a good plastic crate mold? 


Make the mould in high quality is so important, or it will bring so many troubles for the plastic factories on cost and time.

To make a good crate mold, you need to know the technical points and the quality points of the crate mold as follows.

Quality points:

long life

high speed performance

air venting solution in the crate handle area 
crate mold technical points:
How to make a crate mold long life running?

Crate mould for manufacturing:

1Use the correct steel for mold base and mold main steel, and choose the high toughness for some part inserts. For example, if we need to make a 2 cavities crate mold, then we need to make to use a prehardened steel with 32HRC for mold base. We have to choose the correct steel material for the durable mold components.
2Choose the correct harden treatment to core, cavtity, sliders and insert piece and make the steel hardness controlled, we cannot make the steel too hard usually. Sometimes, not the high hardness is good for the mold, since it is easy broken.
3The guide system and moving area of crate mold must use precise machining process. Handmade working is not acceptable, or the guide system and moving area will be with problem on running.
4Hot runner system is very important for big crate and light crate. So we will make the mold flow analysis software for the hot runner system crate molds. In order to fill the plastic material in balance, we need a very special hot runner system, because if we need to molding a durable plastic crate, we should use low melt flow index HDPE, such like MFI=4 or even MFI=6……
5Reduce the cycle time to save the cost, we must make the cooling the best optimal effect, for durable plastic crate mold, we should to use mold-max on the molding area with excellent cooling water channel design, for one-time use crate, we need to use tempering steel with excellent cooling system designed….
6If you have no injection machine at present, and plan to buy the new one, we suggest you to buy the high speed injection molding machine to run it, the screw RPM should be bigger then 350. Now, many of crate manufacturers use an accumulator to increase the melt and injection speed around the world.
7Of course, plastic crate mold design  is top important, it is better to use a mechanical system onto the crate mold ejection, in this way, we can make the ejection action when the mold opening. Of course, if your machine can work with the 2 hydraulic acting in the same time, then you can do the ejection when the mold opening.
8For all kinds of mold, the high speed running is based on the mold is précised machining, the movement parts with accurate guided…otherwise, there is none possibility for a mold high speed performance.
9The handle parts on plastic crate, need to solve the air venting problem: this is an important issue, as because when the crate was loaded and the people carry the crate, the 2 handle area will be the biggest force focused. If on the mold, this area’s air venting is not perfect, there will be a very obviously jointing line. The damage are always come from this line.

ACE MOULD is the leading crate mold manufacturer in the China, we has made more than 200 sets of various crate molds every year, such as for beverage industry, fish industry, fruit , vegetable, food industry, etc. Especially, we help the customer to design different styles to meet the clients’ local marketing.

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